[NSRCA-discussion] Ideas?

[Ron Van Putte]

On Jul 14, 2006, at 12:21 PM, Ed Miller wrote:

> Although I haven't run into this particular problem I will say I  
> remove the
> anodizing from the head gasket surface and glow plug sealing areas  
> of the
> Mintor head.  I originally did this as I could not get the glow  
> plug to
> light and we traced it back to no continuity between the head and  
> cylinder
> liner/crankcase.  My experience with 2 strokes has been worn big  
> end and
> small end of connecting rod and excessive clearance between the  
> crankshaft
> and crankcase cause erratic running characteristics. One other  
> thing I would
> look at is a dislodged baffle in the pipe and/or partially blocked  
> header
> and/or pipe.

I will pass all the e-mails on this subject to John.  We will get  
this problem solved.

Thanks to everyone who responded so far and will respond before we  
leave for the Nats.

Ron Van Putte

> ----- Original Message -----
> From: "Ron Van Putte" <vanputte at cox.net>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Friday, July 14, 2006 11:36 AM
> Subject: [NSRCA-discussion] Ideas?
>
>
>> John Fuqua has been having an annoying and thoroughly confusing
>> problem.  He has been using two different OS 1.40 RX engines for the
>> past three years and they've run flawlessly until recently.  He's had
>> one in an Impact since the early spring.  A month or so ago, the
>> engine started dying in the air periodically when he advanced the
>> throttle from idle.  He tried adjusting the idle mixture control and
>> the main needle valve and the problem seems to go away.
>>
>> Suddenly, a few days ago, the engine would die as soon as the ignitor
>> was removed.  No problem:  it's the plug(s).  He's using the Mintor
>> 1.40 head on these engines and they have two plugs.  Replace both
>> plugs.  Engine ran flawlessly for the rest of the flying session.
>> The next day, the problem was back, exactly like it was the day
>> before.  Then we removed the entire fuel system, cleaning everything
>> and replacing the fuel tubing, fuel filter and tank clunk.  Replaced
>> the glow plugs as well.  Engine ran flawlessly for the rest of the
>> flying session.  The next day, the problem was back, exactly like it
>> was the day before.   Yanked out that engine and installed its twin,
>> fresh after a rebuild.  Engine ran flawlessly for the rest of the
>> flying session.  The next day, the problem was back, exactly like it
>> was the day before.  John has been using Morgan 20% heli fuel as long
>> as he's been running these engines and it's worked great.
>> Nevertheless, during this ongoing saga, we tried Morgan 30% heli fuel
>> and Morgan Pro Power 20% and nothing seems to break the pattern.
>> HELP!  We leave for the Nats tomorrow.
>>
>> BTW, I have been using an OS 1.40 RX in my airplane for the past two
>> seasons and have loved it.
>>
>> Ron Van Putte
>>
>> _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion at lists.nsrca.org
>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion